Room cooler



Filed May 4, 1951 i'ai y 29, 1952 c. 2: L. LIPMAN 2, 4,7

' Roou coouan 3 Shoots-Sheet 1 LY/UGI I107,

$005K 6 .13 a W July 29, 1952 c, upuj 2,604,763

Roou COOLER Filed May 4, 1951 3 Sheets-Sheet 3 16 A I I 71/ war v6 gar/Z Ww/W 944g,

Patented July 29, 1952 UNI-TED STATES PATENT OFFICE 1 The present invention relates to a novel room cooler adapted to be mounted in a window open-. ing and assuring maximum visibility and most effective air circulation.

Among the objects of the present invention is the provision of a novel room cooler of, the type adapted to be mounted on the ledge of a window opening. In the present novel embodiment, the

- evaporator unit and the condenser unit are both positioned on the window sill in horizontal alignment but separated in such manner that the window may be lowered therebetween to substantially its normal-closed position whereb greater visibility maybe afforded.

The present invention further comprehen the provision of a novel divided room cooler assembly adapted to be mounted in a window opening and so constructed and arranged that the evaporator unit disposed at the interior of the window and the condenser unit disposed at the exterior of the window draw air into their respective units from adjacent the glass. To accomplish this the cabinets or covers housing these units have their rear ,wall or side facing the glass open to the free entry and passage of air therethrough and directing this air from adjacent the glass through and over the enclosed evaporator and condenser units.

In the present invention the air to be cooled is drawn from adjacent the window pane and circulated and recirculated in the room or en- 6 Claims. (Gl- 62-129) closure, with provision being made for entrance into the room of additional air from the exterior when desired.

The invention further resides in the construction, combination and arrangement of parts illustrated in the accompanying drawings, and while there is shown therein a preferred embodiment, it is to be understood that the same is susceptible of modification and change. and comprehends other details, arrangements of parts, features and constructions without departing from the spirit of the invention.

In the drawings:

Figure Us a view in perspective of the novel roomcooler assembly mounted in a window opening upon the window sill for cooling an ofilce or other room or enclosure.

' Fig. 2 is a view in end elevation of the novel being taken in a plane represented by the line 2-2 of Fig. 3 and taken in the direction of the arrows.

Fig. 3 is a view in front elevation of the novel 2 room cooler assembly taken from the interior of the room.

Fig. 4 is a fragmentary enlarged top plan view of the novel room cooler assembly with the top portions of the covers or cabinets for the divided assembly broken away or removed fora clearer disclosure of the interior.

Fig. 5 15a fragmentary enlarged view in end elevation of the novel room cooler assembly with an end wall of the cabinets or covers of the divided assembly removed or broken away.

Fig. 6 is a view in end elevation of the cooler assembly with the cabinets or covers for housing the units shown removed or lifted therefrom.

Fig. '7 is a plan view of a mounting frame to be rigidly secured or anchored to the window sill and adapted to, removably receive and support the chassis upon which the assembly is mounted.

Fig. 8 is a view in end elevation of the mounting frame of Fig. 7:

Fig. 9 is a view in perspective of the chassis or pan upon which the component parts of the condenser and evaporator units are assembled, and which chassisand assembly are removably supported upon the mounting frame.

Fig. 10 is a top plan view of an alternate construction of room cooler with top portions of the cabinets or covers housing the units broken away.

Referring more particularly to the 'disclosure in the drawings, and especially to the illustrative embodiment of Figs. 1 to 9 inclusive, the novel room cooler comprises a divided assembly including an evaporator unit l0 enclosed or housed within a cabinet or cover II and disposed at the interior of a window pane l2, and a condenser unit It enclosed or housed within a cabinet or cover ll disposed at the exterior of the window pane.

To securely support the inner and outer units it and is in spaced relation with respect to the window pane l2 and in horizontal alignment, they are preferably mounted in proper operative relation upon a common supporting chassis or pan It, and this chassis or pan is adapted to be removably supported upon a mounting frame it rigidly secured to the window sill A. This frame ll may be formed of angle sections I'I suitably Joined together (Figs. 6, 7 and 8), and is anchored upon the sill A or its riser by a cross angle or bracket l8 suitably secured to the exterior or interior of the sill, or it may be anchored onto or under the sill in any suitable manner. The angle members i! provide an upstanding flange on three sides of the frame with the front 3 or side toward the interior of the room bein open to permit the chassis I! along with the divided or spaced condensing and evaporating units supported thereon from being quickly moved or slid into place on the frame and as readily removed therefrom.

The evaporator unit Ill disposed at the interior of the window pane is supported on the ilnperforate base portion is of the chassis I8 and includes an evaporator 2| at the front of the unit connected to or communicating with the intake or low side of a motor compressor 22 through a pipe or tubing 28, and a fan 24 driven by an electric motor 25 for drawing air into the unit through the open rear wall 28 of the cabinet or cover II for housing the unit and for discharging the cooled air through the louvered open front 80 or other desired openings and circulating the cooled air in the interior of the room.

The condenser unit i3 includes the motor compressor 22 and a condenser 21 mounted on an imperforate base portion 28 of the common supporting chassis i disposed at the exterior of the window sash 29. The high or exhaust side of the compressor is connected to or communicates with the condenser 21 by means of a pipe or tubing 8| and the condenser communicates by means of a pipe or tubing 82 with the inlet side of the evaporator 2i. Thus the high compression refrigerant or liquid line passes through the pipe or tube II from the top of the compressor 22 through the condenser 21 and the low or suction line is connected by the pipe or tubing 23 to an expansion valve 23 and to the evaporator 2| through a capillary tube or conduit 32. vThe pipes or tubing between the two units pass through and are preferably housed within a hollow chamber 34 connecting the lower 'portion of the condenser and evaporator units A fan as shown as driven by an electric mo tor 21 circulates air from the exterior through the condenser 21 and about the compressor 22, the air being drawn in from between the rear wall 28 of the condenser unit and the adjacent exterior surface of the window and through the open rear wall 38 of the cover or cabinet it,

across the condenser and compressor and discharging the air outwardly through the ex--' terior or front wall 89 of the cabinet or cover it. Additional air may be pulled or drawn over the compressor and condenser through side louvers 40, if desired.

The front or exterior wall 89 of the cabinet or cover It is open to permit passage of air therethrough. although it may be provided with louvers similar to the louvers in the front wall 30 of the cabinet or closure II. The rear wall 38 of the outer cabinet or cover 14 like the rear wall 26 of the inner cabinet or cover Ii housin the evaporator unit. is open for the free passage of air therethrough. Preferably, these walls are provided or formed with openings, perforations or slots which do not obstruct the free ilow of air therethrough but prevent the entrance of forei n matter which might enter the space be;- tween the glass and the wall.

To allow for and control the entrance of fresh air from the exterior into the room being cooled, when that becomes necessary or desirable. the side wall 88" of the hollow support 24 which is open to the atmosphere, is provided with a damper or pivoted closure II for controlling the quantity of external air admitted. This damper or pivoted closure is adjusted or moved to open. closed or an intermediate position by means of a manually operated handle 42 fixed to. and

, adapted to rotate one end of a cross pin or shaft 43 Journalled in the chassis.

A flexible electrical cable 44 is connected at its free end to a source of current supply by a suitable connector or plug (not shown). This cable is connected through a toggle switch 4! or the like and a starting relay or control unit 48 to the motor compressor 22, and to the motors 28 and 81 for operating the fans 24 and 28, respectively. A cooling oil radiator 41 is preferably provided for cooling the oil circulating through oil lines 48 and 48' connected to the compressor 22. The compressor shown is preferably of the type disclosed in the refrigerating systems of my prior Patents Nos. 1,899,341, 1,949,724. 1,965,420, 1,967,034, 2,018,917, 2,038,434 and 2,100,716.

In the operation of the room cooler and assuming the plug attached to the cable 44 is plugged into any convenient socket outlet and the toggle switch 45 is moved to "On position.

- capillary tube, etc.

Fig. 10 discloses an alternate embodiment or modified form of room cooler in which the condenser unit 4! is mounted at the exterior of the window and the evaporator unit BI is mounted at the interior of the window with the entire unit assembly mounted upon a supporting chassis and the chassis detachably supported upon a mounting frame rigidly secured to the window sill in a manner similar to that of the embodiment in Figs. 1 to 9 inclusive. In this embodiment of Fig. 10', the supporting chassis 82 supports a circulating fan 82 and a motor ll therefor centrally of the chassis. The cabinet or cover I! for housing the condenser unit is closed at the top, but with the rear wall I8 thereof adjacent the exterior surface of the window and at the outlet or reduced front I! open. Although the latter opening may be provided with louvers, they are not necessary in view of the disposition of the fins on the condenser. Additional inlet openings may be provided in the tapered sides. if desired.

The evaporator unit 5| at the interior of the window is enclosed within a cabinet or cover 58, the evaporator being shown in the form of a capillary tube and heat exchanger ll mounted within a condensate pan n in the chassis 52. Upon this supporting chassis is also mounted a motor compressor unit (not shown but mounted beneath the cabinet at the right hand side of Fig. 10 and'thoroughly insulated from the evaporator and room to be cooled), a circulating fan aeomes interior of the window, are divided or separated by a channel member 60 disposed therebetween and located above the chassis for receiving the lower rail of the window sash. The top and sides of the enclosure or cabinet II for the evaporating unit are closed. but the rear wall 61 thereof is open for the entrance of air from adjacent the interior of the window pane. This open rear of the evaporator unit and the open rear wall 60 cf the cabinet 05 of the condenser unit. permit free passage of air in the respective units from adjacent the window pane, it being understood that the interior and exterior surfaces of the window pane are spaced therefrom sufficiently to permit drawing an adequate supply of air into the respective units from adjacent the glass.

By separating the evaporator and condenser units in the manner disclosed in Figs. 1 to inclusive. and with the assembly of less width than the window of the window opening. the window sash is lowered to a position closely adjacent the window sill from which it is separated only by the depth of the space allotted for the passage of the pipes or tubing connecting the evaporator. condenser and compressor. A relatively narrow filler 08 at each side of the cooler assembly provides a closure thereat. but above the same the occupant of the room to be cooled is afforded unobstructed vision. Furthermore. washing of the window is readily accomplished.

As shown clearly in Figs. 1. 2 and 6. the cabinets or covers II and N are readily removable. and when in assembled position th slots 00 in the lower edges thereof are adapted to receive set screws or bolts II which. when tightened. retain the cover in position. Similar fastening for the covers or cabinets II and II in Fis- 10 ar pr vided.

Having thus disclosed the invention. I claim:

1. A room cooler adapted to be mounted on the window sill of a window opening and including an evaporator unit and a connecting condenser unit disposed at the interior and at the exterior of a slidable window sash. respectively, a common mounting for supporting said units on the window sill in spaced relation whereby the sash may be lowered and received between said units, a cabinet for enclosing each unit with the rear wall of each cabinet disposed adjacent the opposite sides of the window pane and open for the free passage of air into and through each unit from' unit also supported on the base but at the exterior of the sash and in spaced relation with the evaporator unit for receiving the lowered window sash therebetween, and a cover for enclosing said units with each cover having its rear wall disposed adjacent the window opening for the entrance of air therethrough into'the respective units.

3. A room cooler adapted to be mounted on the window sill of a window frame having a slldable sash and including a mounting frame secured to the window sill and projecting laterally therefrom, a removable chassis removably supported on the frame. an evaporator unit supported on the chassis at the interior of the sash and a condenser unit also supported on the chassis but at the exterior of the sash and spaced from the evaporator unit to allow for the lowering of the sash therebetween. a cabinet for enclosing each unit and having its wall adjacent the glass open for the entrance of air, and an air eirculator in each unit for drawing its air supply from adjacent the glass through the open wall of the cabinets.

4. A room cooler adapted to be mounted on the window sill of a window frame having a slidable sash and including a mounting frame secured to the window sill and projecting laterally therefrom. an evaporator unit supported on the frame at the interior of the sash and a condenser unit also supported on the frame but at the exterior of the sash, said units being disposed in substantial horizontal alignment above the window sill and frame and in spaced relation to perwit the sash to be lowered therebetween, and means for drawing in the air to be cooled from adjacent the window.

5. A room cooler adapted to be mounted on the window sill of a window frame having a window sash and including a supporting base secured to the window sill and projecting laterally therefrom, an evaporator unit supported on the base at the interior of the sash and a condenser unit also supported on the base but spaced from the evaporator unit to allow for the positioning of the sash therebetween. said units being supported upon and wholly above the window sill and base with air to be cooled being drawn from between the window and the evaporator unit.

6. A room cooler adapted to be mounted on the window sill of a window frame having a slidable sash and including a mounting frame secured to the window sill and projecting laterally therefrom. an evaporator unit supported on the frame at the interior of the sash and'a condenser unit also supported on the frame but at the exterior of the sash, said units being disposed in substantial horizontal alignment above the window sill and frame and in spaced relation to permit the sash to be lowered therebetween to substantially its normal closed position.

, CARL ill. L. LIPMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2.240.764 Jewell May 6. 1941 2.820.486 Hull June 1. i948 2.862.698 Hull Nova-14. 12M

2.891.609 Babcocl: Jan. 1. 1946 2,600,802 Money Mar. 14. 1960 

